Jenny purchased a prepaid phone card for $30.Long distance calls cost 12 cents a minute using this card. Jenny used her card only once to make a long distance call. If the remaining credit on her card is $24.84, how many minutes did her call last.

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.